Dear all, I have 2 Exchange Server with roles HUB+Client Access running NLB, Both my Exchange 2010 servers running on Windows 2008 R2 are showing Event Id 36887 error on the system log. The source is schannel. Everything works fine, but the error keeps coming. I had check the workaround solution is disable the schannel event logging. Any help to identify what is the root caused for this? Thanks. CW

Please refer the same thread... http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/55d3ef33-caf0-41d3-874d-fc1ad65455cbThanks & Regards, Kottees

Hi, “Schannel” indicates this error was SSL/TLS problem. Did you configure SSL on this server? If so, please check your SSL settings. You can refer to the article: Managing SSL for a Client Access Server http://technet.microsoft.com/en-us/library/bb310795.aspx How to Setup SSL on IIS 7 http://learn.iis.net/page.aspx/144/how-to-setup-ssl-on-iis-7/ Best Regards, Lisa

HI, I think "Schannel" indication the secure communication issue between Server and client. Client system unable to communicate with domain controller using secure channel we need to reset the channels again. You can try nltest /SC_QUERY:domainname nltest /SC_reset:domainname /server:dcname netdom reset hostname /domain:domainname /server:dcname Regards,